const api = require('../../../../utils/api')
import { getTimestamp } from '../../../../utils/common'
const app = getApp()

Component({
  data: {
    issueType: 'new',
    pageNo: 1,
    pageSize: 10,
    timestamp: '',
    issueList: [],
    preloadVisible: true,
    issueLoadMoreVisible: false,
    loadMoreType: 'loading',
    selectedIssueId: ''
  },
  lifetimes: {
    attached () {
      this.getIssueList ()
      this.pulldownrefresh = this.selectComponent('#pulldownrefresh')
      this.triggerEvent('getIssueComponent')
    }
  },
  pageLifetimes: {
    show () {
      if (!app.globalData.previewImage) {
        this.backAndRefreshIssueList()
      }
      app.globalData.previewImage = false
    }
  },
  methods: {
    // 页面滚动监听
    onPageScroll (e) {
      this.pulldownrefresh.onPageScroll(e)
    },
    onReachBottom () {
      this.setData({
        issueLoadMoreVisible: true
      })
      if (this.data.loadMoreType === 'loading') {
        this.data.pageNo += 1
        this.pullDownGetIssueList()
      }
    },
    // 最新最热 tab切换
    changeIssueType () {
      if (this.data.issueType === 'new') {
        this.setData({
          issueType: 'hot',
          preloadVisible: true,
          issueList: [],
          pageNo: 1,
          issueLoadMoreVisible: false
        })
        this.getIssueList()
      } else {
        this.setData({
          issueType: 'new',
          preloadVisible: true,
          issueList: [],
          pageNo: 1,
          issueLoadMoreVisible: false
        })
        this.getIssueList()
      }
    },
    // 下拉刷新 获取议题列表
    getIssueList () {
      this.setData({
        timestamp: getTimestamp(),
        preloadVisible: true,
        issueList: [],
        pageNo: 1,
        issueLoadMoreVisible: false
      })
      const para = {
        pageIndex: this.data.pageNo,
        pageSize: this.data.pageSize,
        timestamp: this.data.timestamp,
        searchContent: '',
        orderType: this.data.issueType === 'new' ? '0' : '1',
        firstCategoryCode: ''
      }
      api.getIssueList(para).then(res => {
        this.pulldownrefresh.stopRefresh()
        console.log('获取议题列表', res)
        this.setData({
          issueList: [...res.data],
          preloadVisible: false,
          loadMoreType: res.data.length === 10 ? 'loading' : 'none'
        })
      }).catch(err => {
        this.pulldownrefresh.stopRefresh()
        this.setData({
          issueList: [],
          preloadVisible: false,
          loadMoreType: 'none'
        })
        console.log(err)
      })
    },
    // 上拉加载更多
    pullDownGetIssueList () {
      const para = {
        pageIndex: this.data.pageNo,
        pageSize: this.data.pageSize,
        timestamp: this.data.timestamp,
        searchContent: '',
        orderType: this.data.issueType === 'new' ? '0' : '1',
        firstCategoryCode: ''
      }
      api.getIssueList(para).then(res => {
        console.log('获取议题列表', res)
        this.setData({
          issueList: [...this.data.issueList,...res.data],
          preloadVisible: false,
          loadMoreType: res.data.length === 10 ? 'loading' : 'none'
        })
      }).catch(err => {
        this.setData({
          issueList: [],
          preloadVisible: false,
          loadMoreType: 'none'
        })
        console.log(err)
      })
    },
    // 跳转详情
    navigateToIssueDetail (e) {
      this.data.selectedIssueId = e.detail.issueId
      wx.navigateTo({
        url: `/subpages/discussion/pages/discussionDetail/discussionDetail?type=issue&detailId=${e.detail.issueId}&showClassify=show`
      })
    },
    // 跳转搜索页面
    navigateToSearchDiscussion () {
      wx.navigateTo({
        url: `/subpages/discussion/pages/searchDiscussion/searchDiscussion?type=issue`
      })
    },
    // 详情回列表，更新状态
    backAndRefreshIssueList () {
      if (this.data.selectedIssueId) {
        const para = {
          pageIndex: 1,
          pageSize: 10,
          timestamp: this.data.timestamp,
          searchContent: '',
          orderType: this.data.issueType === 'new' ? '0' : '1',
          firstCategoryCode: '',
          issueId: this.data.selectedIssueId
        }
        api.getIssueList(para).then(res => {
          console.log('详情回列表，筛选刷新', res)
          if (res.data.length === 1) {
            this.data.issueList.forEach((item,index) => {
              if (item.id === this.data.selectedIssueId) {
                this.data.issueList.splice(index, 1, res.data[0])
              }
            })
          } else {
            const index = this.data.issueList.findIndex(item => item.id === this.data.selectedIssueId)
            this.data.issueList.splice(index, 1)
          }
          this.setData({
            issueList: this.data.issueList
          })
        }).finally(() => {
          this.data.selectedIssueId = ''
        })
      }
    }
  }
})